Ahh paraquat. I looked for an article on this but can't find it but this is a true story. Back in the early 1970's the USA's anti-marijuana campaign was in full speed ahead. Funding was given to spray the Mexican pot fields with paraquat to 'kill the menace dead in its tracks" which became the team line. Well some of the stuff apparently lived and was distributed through the normal channels despite carrying traces of the paraquat. Across campuses in the USA students were suddenly becoming subject to assorted raspatory issues and long story short it was the paraquat that did it.
Test sites were set up where users could submit a small sample of their holdings with a multiple digit password and then, two weeks later, call in with the digit password and get a positive or negative response.
It was really a big deal in my neck of the woods and affected users were concerned about possible lung damage. The spraying stopped, or so the Government said, as there was considerable resentment at the time. Parent's were mad at the kids "who shouldn't have been smoking pot to begin with" to where it became a pretty hot issue.
I can't find a link on i t but my wife remembered it too. The pleasures of youth for a product now legal...as long as the big guy gets his cut.
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